scholarly journals Reabilitação facial por meio de prótese oculopalpebral

2020 ◽  
Vol 9 (6) ◽  
pp. 563-569
Author(s):  
Bárbara Sousa da Silva ◽  
Thaysa Cristina Batista de Mattos ◽  
Erika Akiko Moura Shiota ◽  
Sybilla Torres Dias ◽  
Cristiane Maria Brasil Leal ◽  
...  
Keyword(s):  
Case Report ◽  
In Vitro Study ◽  
Color Stability ◽  
Acrylic Resin ◽  
Technical Note ◽  
Clinical Report ◽  
Facial Prosthesis ◽  
Facial Prostheses

A prótese bucomaxilofacial visa a reabilitação de pacientes que sofreram mutilações na face, restituindo estética e autoestima. Este trabalho visa relatar o caso clínico de um paciente reabilitado com prótese oculopalpebral após sofrer exenteração de órbita, decorrente de um carcinoma espinocelular em pálpebra inferior direita. Paciente, gênero masculino, 56 anos, procurou atendimento odontológico queixando-se de desconforto estético do rosto. Ao exame clínico foi observada ausência do globo ocular, pálpebras e arco superciliar do lado direito, por isto, foi planejada a confecção de uma prótese oculopalpebral. Foi realizada moldagem dos terços superior e médio da face, obteve-se o molde em alginato e, posteriormente, o modelo em gesso. Em seguida, foi confeccionado um globo ocular caracterizado em resina acrílica termopolimerizável. Posteriormente realizou-se, sobre o modelo de gesso, a escultura da área amputada utilizando-se plastilina e cera e após prova e ajustes no paciente, inclusão do conjunto modelo/escultura em mufla e contramufla, com posterior eliminação da peça esculpida. Foi selecionada a cor da pele do paciente e misturou-se uma base ao silicone, que foi incluído na mufla para prensagem. Após a vulcanização do silicone, foram realizados os acabamentos, caracterização e instalação da prótese. Na proservação o paciente relatou grande satisfação com a reconstituição da estética facial. Conclui-se que a prótese bucomaxilofacial é uma alternativa satisfatória para a reabilitação de pacientes que sofreram mutilações faciais, pois restabelece a estética facial, autoestima e convívio social.    Descritores: Prótese Maxilofacial; Olho Artificial; Reabilitação; Carcinoma de Células Escamosas. Referências Duncan BGF, Calhoun ME. Facial prostheses in the rehabilitation of burn patients. Nurse Life Care Planner. 2015;15(3):900-5. Vieira LM, Oguro P, Dias RB, Pimentel ML, Barretto MRP, Coto NP. Proposition of integrated electrical mechanism anda facial prosthesis for eyelid motion on prosthetic oculopalpebral rehabilitation: technical note. J. 2019; 35(2):659-65. Moss OB, Pinheiro BCL, Mendes TCC, Braga FP, Nichthauser B, Leal CMB. Reabilitação oral com prótese bucomaxilofacial em paciente pediátrica submetida à excisão de lesão neoplásica benigna em maxila. Arch Health Invest. 2019;8(11):706-10. Petsuksiri J, Frank SJ, Garden AS, Ang KK, Morrison WH, Chao KS, Rosenthal DI, Schwartz DL, Ahamad A, Esmaeli B. Outcomes after radiotherapy for squamous cell carcinoma of the eyelid. 2008;112(1):111-18. Dib LL, Oliveira JAP. Reabilitação Bucomaxilofacial - uso de próteses e implantes osseointegrados. In: Cardoso RJA, Gonçalves EAN. Odontologia: arte, ciência e técnica. 6 ed. São Paulo: Artes Médicas; 2002. Pinheiro BCL, De Mattos TCB, Dias ST, Braga FP, Leal CMB, Nichthauser B. Reabilitação com prótese ocular em paciente anoftálmico. Full Dent. Sci. 2020;11(42):98-103. Wondergem M, Lieben G, Bouman S, van den Brekel MW, Lohuis PJ. Patients' satisfaction with facial prostheses. Br J Oral Maxillofac Surg. 2016;54(4):394-9. Lanzara R, Thakur A, Viswambaran M, Khattak A. Fabrication of ocular prosthesis with a digital customization technique - a case report. J Family Med Prim Care. 2019;8(3):1239-42. Brandão TB, Filho AJV, Batista VES, Ribeiro ACP, Nary Filho H, Chilvarquer I, et al. Assessment of treatment outcomes for facial prostheses in patients with craniofacial defects: A pilot retrospective study. J Prosthet Dent. 2017;118(2):235-41. Koyama S, Sasaki K, Hanawa S, Sato N. The potential of cohesive silicone for facial prosthetic use: a material property study and a clinical report. J Prosthodont. 2011;20(4):299-304. Soares LHS, Bello CV, Reis AKL, Nunes RR, Mason EM. Tumores malignos de pálpebra. Arq Bras Oftalmol. 2001;64(1):287-9. Grant GT, Aita-Holmes C, Liacouras P, Garnes J, Wilson WO Jr. Digital capture, design, and manufacturing of a facial prosthesis: Clinical report on a pediatric patient. J Prosthet Dent. 2015;114(1):138-41. Sohaib A, Amano K, Xiao K, Yates JM, Whitford C, Werger S. Colour quality of facial prostheses in additive manufacturing. Int J Adv Manuf Technol. 2018; 96(2):881-94. Veerareddy C, Nair KC, Reddy R. Simplified Technique for Orbital Prosthesis fabrication: a case report. J Prosthodont. 2012;21(1):561-68. Bellamy K, Limbert G, Waters MG, Middleton J. An elastomeric material for facial prostheses: synthesis, experimental and numerical testing aspects. 2003;24(27):5061-66. Papaspyrou G, Yildiz C, Bozzato V, Bohr C, Schneider M, Hecker D, Schick B, Al Kadah B. Prosthetic supply of facial defects: long-term experience and retrospective analysis on 99 patients. Eur Arch Otorhinolaryngol. 2018;275(2):607-13. Chang TL, Garrett N, Roumanas E, Beumer J 3rd. Treatment satisfaction with facial prostheses. J Prosthet Dent. 2005;94(3):275-80.  Nomura T, Sato J, Matsuura M, Kawaguchi K, Sekiguchi R, Horie A, Seto K. Lightweight acrylic resin facial prosthesis for maxillofacial defects: a fabrication and retention method. J Prosthet Dent. 2013;110(4):326-30. Dings JPJ, Merkx MAW, de Clonie Maclennan-Naphausen MTP, van de Pol P, Maal TJJ, Meijer GJ. Maxillofacial prosthetic rehabilitation: A survey on the quality of life. J Prosthet Dent. 2018;120(5):780-86. Ariani N, Visser A, Teulings MR, Dijk M, Rahardjo TB, Vissink A, van der Mei HC. Efficacy of cleansing agents in killing microorganisms in mixed species biofilms present on silicone facial prostheses--an in vitro study. Clin Oral Investig. 2015;19(9):2285-93. Goiato MC, Pesqueira AA, dos Santos DM, Zavanelli AC, Ribeiro Pdo P. Color stability comparison of silicone facial prostheses following disinfection. J Prosthodont. 2009;18(3):242-44.  Jebreil K. Accetability of orbital prostheses. J Prosthet Dent. 1980;43(1):82-5.

scholarly journals The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study

2015 ◽  
Vol 5 (3) ◽  
pp. 81-85
Author(s):  
K Lekha ◽  
H Dharanendra Kumar
Keyword(s):  
Comparative Evaluation ◽  
Color Change ◽  
In Vitro Study ◽  
Color Stability ◽  
Acrylic Resin ◽  
Silicone Elastomer ◽  
Heat Cure ◽  
Outdoor Weathering ◽  
Cobalt Blue

ABSTRACT Maxillofacial prosthetic materials either resin or elastomer used for the fabrication of facial prostheses have their own physical and mechanical properties. Maxillofacial prosthesis frequent replacement because the elastomer or acrylic resin and its pigments undergo color changes. Purpose Evaluate the effect of outdoor weathering on color stability of silicone and heat-cure acrylic with two different pigments. Materials and methods Total of 80 circular disk specimens, 40 silicone elastomer and 40 heat-cure clear acrylic resin were fabricated in the prepared mold and two dry earth pigments burnt sienna and cobalt blue was added to the specimens and it was subjected to simulated outdoor weathering. Before and after weathering, CIE values of both control and weathering groups were recorded by using spectrophotometer and tabulated. The obtained data were subjected to statistical analysis. Results Silicone elastomer with burnt sienna showed more color change when exposed to weathering followed by silicone with cobalt blue. Heat-cure with cobalt blue had shown some color change, heat-cure and burnt sienna were the most color stable. Conclusion From the study, it can be concluded that heat-cure acrylic resin with burnt sienna most color stable than silicone elastomer. How to cite this article Lekha K, Kumar HD, Meshramkar R, Nadiger RK. The Effect of Outdoor Weathering on Color Stability of Silicone and Acrylic Resin, Pigments-A Comparative Evaluation: An in vitro Study. Int J Prosthodont Restor Dent 2015;5(3):81-85.

scholarly journals Open tray impression technique using a silica-nylon mesh for splitting implants: a case report

2021 ◽  
Vol 10 (7) ◽  
pp. 1141-1146
Author(s):  
Tarcisio José de Arruda Paes-Junior ◽  
Paolo Freitas ◽  
Renato Sussumu Nishioka ◽  
Gabriela Nogueira de Melo Nishioka ◽  
Leonardo Jiro Nomura Nakano
Keyword(s):  
In Vitro Study ◽  
Acrylic Resin ◽  
Clinical Effectiveness ◽  
Analysis Tool ◽  
Clinical Report ◽  
Procedure Time ◽  
Nylon Mesh ◽  
Impression Technique ◽  
Splitting System

This article describes an alternative open tray technique for implant impressions using a novel reinforced silica-nylon mesh covered with acrylic resin as a splitting system in assembling the abutment complex. The purpose of the procedure is to simplify the technique and improve the resin contraction during clinical procedure, and also optimizes and reduces the chairside time for the patient. The clinical report was supported by an in vitro study where an analysis tool, Strain Gauge Analysis, was used to prove the clinical effectiveness of the technique. The peri-implant strain was determined on polyurethane casts with the torqued prosthesis, and statistically there was no difference in strain under torque of transfers or in the final prosthesis. The nylon mesh attached to acrylic resin represents a promising option for open tray impression technique, creating a resistant union to transfer in an excellent procedure time.

scholarly journals Influence of the Arabic-Coffee on the Overall Color of Glazed or Polished Porcelain Veneers – In vitro Study

2019 ◽  
Vol 13 (1) ◽  
pp. 364-370 ◽  
Author(s):  
Nabiel Alghazali ◽  
Afaf A. Hakami ◽  
Ghadah A. AlAjlan ◽  
Rawan M. Alotaibi ◽  
Faris N. Alabdulwahab ◽  
...  
Keyword(s):  
Colour Change ◽  
In Vitro Study ◽  
Color Stability ◽  
Color Changes ◽  
Significant Difference ◽  
Oral Environment ◽  
Before And After ◽  
Feldspathic Porcelain

Background: Sometimes, porcelain restorations experience some degree of colour change in oral environment, which could be related to the quality of diet and surface roughness of these restorations. Objective: The aim of this in-vitro study was to evaluate the influence of Arabic-Coffee on the overall color of glazed or polished porcelain veneers fabricated from four different porcelain materials and two different thicknesses. Materials and Methods: A total of 160 porcelain disc of tested specimens were fabricated to a standardized thickness of 1.00 mm and 0.6mm using the following materials: Feldspathic porcelain, Zircon, E-max Press, and E-max CAD; (80 discs for each thickness and 20 specimens of each material used). Veneer specimens from each material were randomly divided into two subgroups (n = 10): 10 specimens were kept as glazed, were the other 10 tested specimens were adjusted with diamond burs, and then polished with Ivoclar Vivadent ceramic polishing kits using the recommended protocol for polishing provided by the company. A color of all tested specimens was measured using Vita Easy Shade Spectrophotometer. Then, all specimens were immersed in Arabic coffee (Al Mosafer Coffee, Saudi Arabia) and theromcycled for 1 week, and the colors of all tested specimens were then recorded again. Results: It was shown that there is a significant difference in the average color changes before and after immersing in Arabic-Coffee for all materials and thicknesses used in the current study. In-addition, significant differences in color changes were noticed between glazed and polished specimens. Moreover, colour change caused by the coffee was not significantly related to the thickness of the specimens used. Conclusion: Color stability of porcelain materials could be affected by surface treatment whether glazing or polishing. All aesthetic restorations should be deglazed whenever any adjustments have been done to maintain the color match and stability in an oral environment. Also, Arabic-Coffee is considered as a staining drink to a limited extend where patient should be assured to maintain their oral health to maintain the colour stability of their restorations.

scholarly journals Comparison of Fracture Resistance in Thermal and Self-Curing Acrylic Resins—An In Vitro Study

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1234
Author(s):  
António Sérgio Silva ◽  
Aurora Carvalho ◽  
Pedro Barreiros ◽  
Juliana de Sá ◽  
Carlos Aroso ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Research Work ◽  
Testing Machine ◽  
In Vitro Study ◽  
Dimensional Accuracy ◽  
Acrylic Resin ◽  
Thermosetting Resins ◽  
Acrylic Resins ◽  
The Difference

Thermal and self-curing acrylic resins are frequently and versatilely used in dental medicine since they are biocompatible, have no flavor or odor, have satisfactory thermal qualities and polishing capacity, and are easy and fast. Thus, given their widespread use, their fracture resistance behavior is especially important. In this research work, we comparatively analyzed the fracture resistance capacity of thermo and self-curing acrylic resins in vitro. Materials and Methods: Five prosthesis bases were created for each of the following acrylic resins: Lucitone®, ProBase®, and Megacryl®, which were submitted to different forces through the use of the CS® Dental Testing Machine, usually mobilized in the context of fatigue tests. To this end, a point was defined in the center of the anterior edge of the aforementioned acrylic resin bases, for which the peak tended until a fracture occurred. Thermosetting resins were, on average, more resistant to fracture than self-curable resins, although the difference was not statistically significant. The thermosetting resins of the Lucitone® and Probase® brands demonstrated behavior that was more resistant to fracture than the self-curing homologues, although the difference was not statistically significant. Thermosetting resins tended to be, on average, more resistant to fracture and exhibited the maximum values for impact strength, compressive strength, tensile strength, hardness, and dimensional accuracy than self-curing resins, regardless of brand.

scholarly journals Effect of Cavity Disinfectants on Adhesion to Primary Teeth—A Systematic Review

2021 ◽  
Vol 22 (9) ◽  
pp. 4398
Author(s):  
Ana Coelho ◽  
Inês Amaro ◽  
Ana Apolónio ◽  
Anabela Paula ◽  
José Saraiva ◽  
...  
Keyword(s):  
Primary Teeth ◽  
Clinical Success ◽  
Dental Materials ◽  
In Vitro Study ◽  
In Vitro Studies ◽  
Cochrane Library ◽  
Promising Alternative

Some authors have been proposing the use of cavity disinfectants in order to reduce, or even eliminate, the effect of the microorganisms present in a dental cavity before a restoration is placed. The aim of this study was to evaluate the effect of different cavity disinfectants on bond strength and clinical success of composite and glass ionomer restorations on primary teeth. The research was conducted using Cochrane Library, PubMed/MEDLINE, SCOPUS, and Web of Science for articles published up to February 2021. The search was performed according to the PICO strategy. The evaluation of the methodological quality of each in vitro study was assessed using the CONSORT checklist for reporting in vitro studies on dental materials. Sixteen in vitro studies and one in situ study fulfilled the inclusion criteria and were analyzed. Chlorhexidine was the most studied cavity disinfectant, and its use does not compromise dentin bonding. Sodium hypochlorite is a promising alternative, but more research on its use is required to clearly state that it can safely be used as a cavity disinfectant for primary teeth. Although other disinfectants were studied, there is a low-level evidence attesting their effects on adhesion, therefore their use should be avoided.

Effect of two fluoride varnishes on the color stability of three resin-based restorative materials: an in vitro study

2015 ◽  
Vol 7 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Raha Tafaroji ◽  
Mina Biria ◽  
Farhad Ameri ◽  
Hassan Torabzadeh ◽  
Pasha Qahari ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Color Stability ◽  
Vitro Study ◽  
Restorative Materials

scholarly journals An in-vitro study to evaluate the accuracy of dies obtained from dual arch impression trays using addition silicone impression material and tray combinations

2015 ◽  
Vol 12 (2) ◽  
pp. 111-117
Author(s):  
P K Parajuli ◽  
S George ◽  
V Shenoy
Keyword(s):  
In Vitro Study ◽  
Dimensional Accuracy ◽  
Acrylic Resin ◽  
Simultaneous Recording ◽  
T Test ◽  
Impression Material ◽  
Tooth Preparation ◽  
Made In ◽  
Plastic Trays

Background: Dual-arch impression technique allows the simultaneous recording of  tooth preparation, opposing anatomic tooth and maxillomandibular relationship. The  accuracy of reproduction of this easy and quick technique, however, has not been  studied in detail in past. Objective: To compare the accuracy of the impressions  made by using the same impression material in dual arch plastic trays, dual-arch  metal trays and acrylic resin custom trays. Methods: The dies obtained from the  addition silicone impressions made in dual-arch plastic trays, dual-arch metal trays  and full arch acrylic resin custom trays were compared for the dimensional accuracy  with the prepared typodont tooth as a control. Student’s paired t-test and unpaired  t-test were used for the data analyses using the Statistical Package for Social Studies  (SPSS) version 11.5. Results: The dies obtained from all the impression combinations  showed increased dimension (acrylic resin custom trays 9.4 mm±0.048, dual-arch  plastic trays 9.5 mm±0.035, dual-arch metal trays 9.41 mm±0.017) as compared to  the dimension of control (9.39 mm±0.007). Conclusion: All the tray-impression  material combinations showed variable accuracies. Full arch acrylic resin trays  resulted in greatest accuracy whereas dual-arch plastic trays the least accuracy.Health Renaissance 2014;12(2):  pp: 111-117

scholarly journals Biochemical Interactions Between Polymeric Resins Used for Occlusal Splints and Saliva A pilot study comparing the CAD/CAM technology and the conventional approach

2019 ◽  
Vol 56 (2) ◽  
pp. 409-412 ◽  
Author(s):  
Marina Melescanu-Imre ◽  
Mihaela Pantea ◽  
Alexandra Totan ◽  
Ana Maria Cristina Tancu ◽  
Maria Greabu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
In Vitro Study ◽  
Acrylic Resin ◽  
Occlusal Splints ◽  
Oral Environment ◽  
Cad Cam ◽  
3D Printed ◽  
Polymeric Resins

The CAD/CAM technology has been successfully integrated in clinical and laboratory aspects of dental medicine. The present in vitro study focuses on the biochemical interactions between saliva and three types of polymeric resins for occlusal splints. Dental material samples were produced from 3D printed, milled and self-cured resins and were incubated with saliva samples from 20 healthy volunteers. The results showed that the 3D printed and milled polymeric resins did not produce any significant changes in oxidative stress parameters (uric acid, TAC, GGT, OXSR-1) or inflammatory markers (IL-2, IL-6). On the other hand, the self-cured acrylic resin produced a significant decrease in the salivary TAC and uric acid, the most important antioxidants in saliva, affecting the capacity of saliva to protect the oral environment against oxidative stress.

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